module Mutest
  class Mutator
    class Node
      module Regexp
        # Mutator for regexp capture groups, such as `/(foo)/`
        class CaptureGroup < Node
          handle(:regexp_capture_group)

          children :group

          # Emit mutations
          #
          # Replace `(captured_group)` with `(?:non_captured_group)`
          #
          # @return [undefined]
          def dispatch
            return unless group

            emit(s(:regexp_passive_group, group))
            emit_group_mutations
          end
        end # CaptureGroup
      end # Regexp
    end # Node
  end # Mutator
end # Mutest